Shield tunnel local intelligent cooling device

Abstract

The utility model discloses a shield tunnel local intelligent cooling device which comprises a protective cover, a handle is arranged on the outer side of the protective cover, and an isolation assembly further comprises a connecting bolt arranged in the protective cover. And the left heat exchange unit is arranged on the left side of the first valve. According to the shield tunnel local intelligent cooling device, the left side heat exchange unit, the heat source position segment heat exchange unit and the right side heat exchange unit independently exist in independent spaces, when a shield tunnel segment body is detected, compared with a traditional technology, the shield tunnel local intelligent cooling device has the more accurate temperature detection function, detection result errors caused by external interference are avoided, and meanwhile, the detection efficiency is improved. The temperature sensor body and the information processing system body are additionally arranged, so that the temperature change of the shield tunnel segment at the heat source is conveniently monitored, whether cooling starts or not is judged according to the temperature change, meanwhile, the temperature of the segment at the heat source can be kept basically consistent with the surrounding temperature, and overlarge stress and deformation caused by the temperature change of the segment are avoided.

Description

Technical Field

[0001] The utility model relates to the technical field of subway heat dissipation, in particular to a local intelligent cooling device for a shield tunnel. Background Art

[0002] With the development of urbanization, various geothermal facilities are densely distributed in urban underground spaces, such as geothermal pumps and heating systems. It is inevitable that shield tunnels must be built near geothermal facilities, which causes changes in the stress and deformation of the shield tunnel segments under the action of temperature. As the temperature of the heat source increases, an uneven temperature field will be generated near the shield tunnel, the segments will expand thermally, the internal stress will be readjusted, and temperature deformation will occur, which may lead to problems such as misalignment and joint opening, thereby affecting the safety of the tunnel. Therefore, local cooling treatment is performed on the shield tunnel near the heat source.

[0003] In recent years, many subway tunnel cooling technologies have been developed. For example, CN110887185A discloses an active cooling system for subway tunnels, which can monitor tunnel temperature and actively cool the tunnel; Patent CN 113757837 B discloses a subway tunnel cooling system and a subway platform cooling system, which can monitor the temperature of the inner wall of the tunnel, cool the tunnel through ice storage modules and refrigeration plates, and improve the cooling efficiency. However, these methods are mainly aimed at the entire tunnel, and the cooling effect on local areas is not good, and the cost is relatively high. Therefore, for shield tunnels near geothermal sources, it is necessary to propose a device suitable for local area cooling.

[0004] However, the above-mentioned prior art solutions have the following defects: the shield tunnel cooling device is unable to perform targeted cooling on a local area and is also susceptible to external interference that may cause errors in the detection results. Therefore, the utility model provides a local intelligent cooling device for a shield tunnel to solve the above-mentioned problems. Utility Model Content

[0005] The utility model aims to provide a local intelligent cooling device for a shield tunnel, so as to solve the problem in the above-mentioned background technology that the shield tunnel cooling device cannot perform targeted cooling on a local area and is not easily affected by external interference to cause errors in the detection results.

[0006] To achieve the above object, the utility model provides the following technical solution: a local intelligent cooling device for a shield tunnel, comprising a protective cover, a handle is arranged on the outer side of the protective cover, and an isolation assembly is installed on the inner side of the protective cover, the isolation assembly also includes a connecting bolt arranged inside the protective cover, a first isolation plate is arranged on the outer side of the connecting bolt, a second isolation plate is arranged on the upper side of the first isolation plate, and a third isolation plate is installed on the lower side of the second isolation plate;

[0007] An information processing system body is arranged inside the protective cover, and a terminal is installed at the upper end of the information processing system body, and the upper side of the terminal is connected to the transmission line body, a first conduction line is arranged on the right side of the information processing system body, a second valve is installed at the inner end of the first conduction line, and the first valve is installed on the left side of the second valve, a right heat exchange unit is arranged on the right side of the second valve, and a right temperature sensor is installed on the left side of the right heat exchange unit;

[0008] The left heat exchange unit is arranged on the left side of the first valve, and a left temperature sensor is installed on the right side of the left heat exchange unit, the lower end of the first valve is connected with the second conduction line, and a heat source segment heat exchange unit is arranged on the right side of the first valve, a water pump is installed on the upper end of the heat source segment heat exchange unit, and a water tank is installed on the upper end of the water pump, and a temperature sensor in the heat source segment is arranged on the right side of the water tank, the lower end of the transmission line body is connected with the temperature sensor body, and a support seat is arranged on the outside of the temperature sensor body, the support seat is connected with a connecting bolt inside, and the shield tunnel segment body is arranged on the outside of the connecting bolt.

[0009] Preferably, the connecting bolt is threadedly connected to the first isolation plate and the protective cover, and the first isolation plate and the third isolation plate are both in an "L" shape.

[0010] Preferably, the second isolation plate is relatively engaged with the information processing system body, and the first conductive line and the second conductive line both pass through the interior of the second isolation plate.

[0011] Preferably, the tube sheet heat exchange unit at the heat source, the right heat exchange unit and the left heat exchange unit are all in a continuously bent structure.

[0012] Preferably, the temperature sensor body is relatively snap-fitted to the support base, and the connecting bolts are arranged at equal angles with respect to the center of the support base.

[0013] Preferably, the shield tunnel segment body is an arc-shaped structure, and the temperature sensor body is relatively snap-fitted and connected to the shield tunnel segment body.

[0014] Preferably, the right heat exchange unit, the tube sheet heat exchange unit at the heat source and the left heat exchange unit are respectively placed in separate spaces inside the protective cover.

[0015] Compared with the prior art, the utility model has the following beneficial effects: the shield tunnel local intelligent cooling device distributes the internal space of the protective cover by adding an isolation assembly, so that the left heat exchange unit, the heat exchange unit of the pipe segment at the heat source and the right heat exchange unit exist separately in independent spaces. When detecting the shield tunnel pipe segment body, compared with the traditional technology, it has a more accurate temperature detection function, avoiding errors in the detection results caused by external interference. At the same time, the temperature sensor body and the information processing system body are added to facilitate monitoring the temperature change of the shield tunnel pipe segment at the heat source, and judging whether to start cooling based on it. At the same time, the temperature of the pipe segment at the heat source can be kept basically consistent with the surrounding temperature, avoiding excessive stress and deformation due to the temperature change of the pipe segment. The specific operation is as follows;

[0016] 1. An isolation assembly and a protective cover are provided. The left heat exchange unit, the heat exchange unit at the heat source, the right heat exchange unit and the information processing system body are placed inside four spaces respectively. A left temperature sensor is installed near the left heat exchange unit, a heat source tube heat exchange unit is installed near the heat source tube heat exchange unit, and a right temperature sensor is installed near the right heat exchange unit. Independent spaces are set up to facilitate more accurate temperature detection and avoid errors in detection results caused by external interference;

[0017] 2. A support seat and a connecting bolt are provided, and the temperature sensor body is relatively engaged with the support seat, and the connecting bolt is arranged at equal angles with respect to the center of the support seat. The shield tunnel segment body is an arc-shaped structure, and the temperature sensor body is relatively engaged with the shield tunnel segment body, so as to facilitate the stable placement of the temperature sensor body;

[0018] Furthermore, the electrical signal input by the temperature sensor body can be converted into a temperature signal through the information processing system, and the temperature difference at different positions can be calculated. The output port can control the operation of the local cooling module according to the temperature difference, so as to facilitate monitoring the temperature change of the shield tunnel segment at the heat source and judge whether to start cooling based on it. At the same time, the temperature of the segment at the heat source can be kept basically consistent with the surrounding area, avoiding excessive stress and deformation due to the temperature change of the segment. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 This is a schematic diagram of the front cross-sectional structure of the utility model;

[0020] Figure 2 This is a schematic diagram of the layout of the temperature sensor body of the utility model;

[0021] Figure 3 This is a schematic diagram of the overall structure of the support base and the connecting bolt of the utility model;

[0022] Figure 4 For this utility model Figure 1Enlarged structural diagram at A in the middle.

[0023] In the figure: 1. Protective cover; 2. Handle; 3. Isolation assembly; 301. Connecting bolt; 302. First isolation plate; 303. Second isolation plate; 4. Information processing system body; 5. Terminal; 6. Transmission line body; 7. First conduction line; 8. Left temperature sensor; 9. Left heat exchange unit; 10. Third isolation plate; 11. Second conduction line; 12. First valve; 13. Second valve; 14. Heat exchange unit at heat source; 15. Right temperature sensor; 16. Water pump; 17. Water tank; 18. Temperature sensor inside the heat source segment; 19. Temperature sensor body; 20. Support seat; 21. Connecting bolt; 22. Shield tunnel segment body; 23. Right heat exchange unit. DETAILED DESCRIPTION

[0024] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0025] See also Figure 1-4 The utility model provides a technical solution: a local intelligent cooling device for a shield tunnel, comprising a protective cover 1, a handle 2 is arranged on the outer side of the protective cover 1, and an isolation assembly 3 is installed on the inner side of the protective cover 1, the isolation assembly 3 also includes a connecting bolt 301 arranged inside the protective cover 1, a first isolation plate 302 is arranged on the outer side of the connecting bolt 301, and a second isolation plate 303 is arranged on the upper side of the first isolation plate 302, and a third isolation plate 10 is installed on the lower side of the second isolation plate 303;

[0026] The information processing system body 4 is arranged inside the protective cover 1, and a terminal 5 is installed at the upper end of the information processing system body 4, and the upper side of the terminal 5 is connected to the transmission line body 6, a first conduction line 7 is arranged on the right side of the information processing system body 4, and a second valve 13 is installed at the inner end of the first conduction line 7, and a first valve 12 is installed on the left side of the second valve 13, a right heat exchange unit 23 is arranged on the right side of the second valve 13, and a right temperature sensor 15 is installed on the left side of the right heat exchange unit 23;

[0027] The left heat exchange unit 9 is arranged on the left side of the first valve 12, and the left temperature sensor 8 is installed on the right side of the left heat exchange unit 9, the lower end of the first valve 12 is connected to the second conduction line 11, and the right side of the first valve 12 is provided with a heat source segment heat exchange unit 14, the upper end of the heat source segment heat exchange unit 14 is installed with a water pump 16, and the upper end of the water pump 16 is installed with a water tank 17, and the right side of the water tank 17 is provided with a temperature sensor 18 in the segment at the heat source, the lower end of the transmission line body 6 is connected with a temperature sensor body 19, and a support seat 20 is arranged on the outside of the temperature sensor body 19, the inside of the support seat 20 is connected with a connecting bolt 21, and the outer side of the connecting bolt 21 is provided with a shield tunnel segment body 22, which constitutes a local intelligent cooling device for a shield tunnel.

[0028] like Figure 1 and Figure 4 As shown, the connecting bolt 301 is relatively threadedly connected to the first isolation plate 302 and the protective cover 1, and the first isolation plate 302 and the third isolation plate 10 are both "L"-shaped, the second isolation plate 303 is relatively snap-fitted and connected to the information processing system body 4, and the first conduction line 7 and the second conduction line 11 are both passed through the inside of the second isolation plate 303, the right heat exchange unit 23, the heat source tube sheet heat exchange unit 14 and the left heat exchange unit 9 are respectively placed in separate spaces inside the protective cover 1, the first isolation plate 302, the second isolation plate 303 and the third isolation plate 10 are placed in the appropriate position of the protective cover 1, and the connecting bolt 301 is tightened so that the first isolation plate 302 and the protective cover 1. The second isolation plate 303 and the protective cover 1, as well as the third isolation plate 10 and the protective cover 1, are connected via the connecting bolt 301, which as a whole divides the internal space of the protective cover 1 into four components, and the left heat exchange unit 9, the heat source tube sheet heat exchange unit 14, the right heat exchange unit 23 and the information processing system body 4 are respectively placed inside the four spaces, and a left temperature sensor 8 is installed near the left heat exchange unit 9, a heat source tube sheet temperature sensor 18 is installed near the heat source tube sheet heat exchange unit 14, and a right temperature sensor 15 is installed near the right heat exchange unit 23. Independent spaces are set up to facilitate more accurate temperature detection and avoid errors in detection results caused by external interference.

[0029] like Figure 1 , Figure 2 and Figure 3As shown, the heat exchange unit 14 at the heat source, the heat exchange unit 23 on the right side and the heat exchange unit 9 on the left side are all in a continuous bending structure, the temperature sensor body 19 is relatively engaged with the support seat 20, and the connecting bolt 21 is arranged at an equal angle with respect to the center of the support seat 20, the shield tunnel segment body 22 is in an arc structure, and the temperature sensor body 19 is relatively engaged with the shield tunnel segment body 22, and the shield tunnel local intelligent cooling device includes three parts: a temperature monitoring module, a real-time decision module and a local cooling module; the temperature monitoring module is arranged near the heat source of the shield tunnel concerned and its surroundings, the real-time decision module is connected to the temperature monitoring module and the local cooling module, and the local cooling module is arranged near the heat source of the shield tunnel concerned and its surroundings, and the temperature monitoring module includes a temperature sensor body 19, a support seat 20, an opening, a sensor power supply, and an output port;

[0030] The temperature sensor body 19 can be made of thermocouple, infrared or other principles, and is buried in the opening to measure the temperature at the bottom of the opening; the support can be made of stainless steel, etc., and is fixed to the shield tunnel segment body 22 through the connecting bolt 21, and has the function of fixing the sensor on the support seat 20; the diameter of the opening should meet the conditions for accommodating the temperature sensor body 19 to be buried, and its depth should at least reach the deepest point of the support bolt, while ensuring that the shield tunnel segment body 22 does not have safety hazards due to the opening. After the temperature sensor body 19 is buried, the excess gap should be sealed with rubber or the like to ensure that the temperature inside the opening is not affected by the air flow inside the tunnel; the sensor power supply can provide the required stable voltage for the sensor by connecting to the power supply in the tunnel; the output port can transmit the measured temperature signal to the real-time decision module; the real-time decision module includes an information processing system, an input port, an output port, a conduction line, and a power supply; the information processing system can convert the electrical signal input by the temperature sensor body 19 into a temperature signal, calculate the temperature difference at different positions, and control the operation of the local cooling module by the output port according to the temperature difference;

[0031] The input port can be connected to the temperature sensor signal and has a waterproof function; the output port can output the electrical signal for controlling the water pump 16, the first valve 12 and the second valve 13 and has a waterproof function; one end of the conduction line is connected to the information processing system, and the other end is connected to the corresponding parts of the temperature monitoring module and the local cooling module, which is used to conduct the sensor signal to the information processing system and control the operation of the local cooling module;

[0032] The local cooling module includes a water pump 16, a first conduction line 7, a second conduction line 11, a water tank 17, a left heat exchange unit 9, a heat exchange unit 14 at the heat source, a right heat exchange unit 23, a first valve 12 and a second valve 13; the water pump 16 is controlled by the real-time decision module to drive the water circulation in the local cooling module; the second conduction line 11 and the first conduction line 7 are used to connect the water devices of each part; the water tank 17 is used to adjust the water pressure in the whole system and is placed far away from the heat source; the left heat exchange unit 9, the heat exchange unit 14 at the heat source, the heat exchange unit 23 at the right side, the first valve 12 and the second valve 13. The element 14 and the right heat exchange unit 23 are respectively arranged near the heat source of the shield tunnel and far away from the surrounding area, and are used to keep the temperature near the heat source close to the surrounding temperature to avoid excessive internal stress and deformation of the pipe segment caused by the temperature difference; the first valve 12 and the second valve 13 are connected to the real-time decision-making module to control the location of water circulation. The local cooling module does not need real-time water supply, and only needs to add enough water once. The water in the module can be recycled. The local cooling module is only used to transfer the heat near the heat source to the surrounding environment, and does not have the function of cooling the overall environment;

[0033] The specific workflow is as follows:

[0034] When the difference between the temperature measured by the temperature sensor 18 in the segment at the heat source and the temperature measured by the left temperature sensor 8 and the right temperature sensor 15 is less than the limit value, the information processing system body 4 controls the water pump 16 and the first valve 12 and the second valve 13 to close, and the local cooling module is in a dormant state. The above limit value needs to be calculated and determined based on the diameter of the shield tunnel, the distance from the heat source, the thermal conductivity of the stratum and the segment, the thermal expansion coefficient of the segment, etc. It is advisable to use finite element analysis to determine the limit value. Within the limit value, the stress and deformation of the segment caused by the temperature difference are small, and will not affect the safety of the shield tunnel.

[0035] When the difference between the temperature measured by the temperature sensor 18 in the heat source segment and the temperature measured by the left temperature sensor 8 or the right temperature sensor 15 is greater than the limit value, the information processing system body 4 controls the water pump 16 to open, and the corresponding first valve 12 or second valve 13 opens, and cooling water begins to flow between the heat exchange unit 14 at the heat source segment and the left heat exchange unit 9 or the right heat exchange unit 23, so that the temperatures of the two segments begin to approach, so as to eliminate the stress and deformation of the segments caused by the temperature difference, facilitate monitoring the temperature changes of the shield tunnel segments at the heat source, and judge whether to start cooling based on it. At the same time, the temperature of the segments at the heat source can be kept basically consistent with the surrounding area, avoiding excessive stress and deformation due to temperature changes of the segments. This is the method of using the local intelligent cooling device for the shield tunnel.

[0036] The standard parts used in the utility model can be purchased from the market, and special-shaped parts can be customized according to the description in the specification and the drawings. The specific connection methods of each part adopt the conventional means such as mature bolts, rivets, welding, etc. in the prior art. The machinery, parts and equipment all adopt the conventional models in the prior art, and the circuit connection adopts the conventional connection method in the prior art, which will not be described in detail here. The content not described in detail in this specification belongs to the prior art known to professional and technical personnel in this field.

[0037] Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art may still modify the technical solutions described in the aforementioned embodiments, or make equivalent substitutions for some of the technical features therein. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention shall be included in the protection scope of the present invention.

Claims

1. A shield tunnel local intelligent cooling device, comprising a protective cover (1), a handle (2) being arranged on the outer side of the protective cover (1), and an isolation assembly (3) being installed on the inner side of the protective cover (1), characterized in that: The isolation assembly (3) further comprises a connection bolt (301) arranged inside the protective cover (1), a first isolation plate (302) being arranged on the outside of the connection bolt (301), a second isolation plate (303) being arranged on the upper side of the first isolation plate (302), and a third isolation plate (10) being installed on the lower side of the second isolation plate (303); An information processing system body (4) is arranged inside the protective cover (1), and a terminal (5) is installed at the upper end of the information processing system body (4), and the upper side of the terminal (5) is connected to a transmission line body (6), a first conduction line (7) is arranged on the right side of the information processing system body (4), a second valve (13) is installed at the inner end of the first conduction line (7), and a first valve (12) is installed on the left side of the second valve (13), a right heat exchange unit (23) is arranged on the right side of the second valve (13), and a right temperature sensor (15) is installed on the left side of the right heat exchange unit (23); A left heat exchange unit (9) is arranged on the left side of a first valve (12), and a left temperature sensor (8) is installed on the right side of the left heat exchange unit (9); the lower end of the first valve (12) is connected to a second conduction line (11), and a heat source segment heat exchange unit (14) is arranged on the right side of the first valve (12); a water pump (16) is installed on the upper end of the heat source segment heat exchange unit (14), and a water tank (17) is installed on the upper end of the water pump (16), and a heat source segment internal temperature sensor (18) is arranged on the right side of the water tank (17); the lower end of the transmission line body (6) is connected to a temperature sensor body (19), and a support seat (20) is arranged on the outside of the temperature sensor body (19); a connecting bolt (21) is connected to the inside of the support seat (20), and a shield tunnel segment body (22) is arranged on the outside of the connecting bolt (21).

2. A shield tunnel local intelligent cooling device according to claim 1, characterized in that: The connecting bolt (301) is threadedly connected to the first isolation plate (302) and the protective cover (1), and the first isolation plate (302) and the third isolation plate (10) are both in an "L" shape.

3. A shield tunnel local intelligent cooling device according to claim 1, characterized in that: The second isolation plate (303) is relatively engaged and connected with the information processing system body (4), and the first conductive line (7) and the second conductive line (11) both pass through the interior of the second isolation plate (303).

4. A shield tunnel local intelligent cooling device according to claim 1, characterized in that: The heat source tube sheet heat exchange unit (14), the right heat exchange unit (23) and the left heat exchange unit (9) are all in a continuously bent structure.

5. The local intelligent cooling device for a shield tunnel according to claim 1, characterized in that: The temperature sensor body (19) is relatively engaged with the support base (20), and the connecting bolt (21) is arranged at an equal angle with respect to the center of the support base (20).

6. The local intelligent cooling device for a shield tunnel according to claim 1, characterized in that: The shield tunnel segment body (22) is in an arc-shaped structure, and the temperature sensor body (19) is relatively engaged and connected with the shield tunnel segment body (22).

7. The local intelligent cooling device for a shield tunnel according to claim 4 is characterized in that: The right heat exchange unit (23), the heat source tube sheet heat exchange unit (14) and the left heat exchange unit (9) are respectively placed in separate spaces inside the protective cover (1).

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